The Spencer family estate in Althorp, England where Princess Diana is buried. Photo: 11.29.97

Kate Middleton (WireImage)

NORTHAMPTON, England — Prince William and Kate Middleton made an emotional visit to Princess Diana’s grave just days before they are due to be married, the Daily Mirror reported Thursday.

Middleton held hands with William as they visited the tomb, built on an island at Diana’s family’s estate, Althorp, in central England.

The couple took a boat to the island and laid flowers during the emotional and somber visit, a far cry from the scenes of national celebration expected when they marry in London next Friday, the report said.

The report did not specify when the visit took place.

After their engagement was announced, William said he gave his bride-to-be his mother’s famous diamond and sapphire ring as “my way of making sure my mother didn’t miss out” on the excitement.

Kate previously spoke of her admiration of Diana, saying, “Obviously I would have loved to have met her, and she’s obviously an inspirational woman to look up to.”

Diana was buried on an island known as The Oval in the estate, home to the Spencer family for 500 years, after her 1997 death in a Paris car crash. The simple tomb contains two marble slabs with inscriptions and a profile of Diana.

William also showed Kate the ancient arboretum nearby where he and his brother Harry, who will be his best man, planted trees when they were children, the report said.